Nano Banana is focused on editing. But the Pro version handles your prompt much better. First image is Pro, second is 2.5

https://imgur.com/a/3PDUIQP

Wow, that top image is actually quite good! Interestingly, I just got into Pro and got a worse result than yours. https://imgur.com/a/ENNk68B ... and it really seems to just vary by attempt even with the exact same prompt.